Enter your desired frequency and get the calculated lengths from below. For example,
if you wanted a general J-Pole for 2 meters, you might enter the center of the 2 meter band which would be
146.00 mhz. If you predominately used the upper side of the 2 meter band you might put 147.00 mhz. Or if
you mostly are on one repeater you might put that frequency, for example 147.12. Your antenna will
be tuned to work optimally on the frequency you enter and will generally perform well within an entire band.
Note: The measurement arrows are specifically drawn to point to EXACTLY where the measurements are from.
For example, the distnace shown between the center poles is measured from pole to pole and
NOT from center to center.
The four critical measurements are (from Left to Right):
1. Long Arm Length
2. Distance between Arms
3. Distance of Feed Point from Base
4. Short Arm Length